Who is Tang Yangtong from To the Storm: The Odyssey of a Revolutionary Chinese Woman and what is their importance?

Tang Yangtong is the father of Lao Tang, Yue Daiyun's husband. He had been president at Beida from 1949 to 1962 and then became a vice-president, the position he held until his death in May 1964. He had received his Masters Degree at Harvard University and had lectured at Berkeley in 1947-48.